what is this?
avalanche
what is this?
landslide
what is this?
drought
what is this?
flood
what is this?
hurricane
what is this?
tornado
what is this?
earthquake
what is this?
tsunami
what is this?
deforestation
what is this?
greenhouse gases
what is this?
volcanic eruption
what is this?
pollution
what is this?
wildfire